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The Australian Cretaceous ichthyosaur Platypterygius australis: a description and review of postcranial remains
School of Earth and Environmental Sciences, North Terrace Campus, University of Adelaide, Adelaide, South Australia, Australia. (Benjamin Kear - Vertebrate Palaeontology Research Group)
School of Animal and Veterinary Sciences, Roseworthy Campus, University of Adelaide, Adelaide, South Australia, Australia.
Uppsala University, Disciplinary Domain of Science and Technology, Earth Sciences, Department of Earth Sciences, Palaeobiology.
2010 (English)In: Journal of Vertebrate Paleontology, ISSN 0272-4634, Vol. 30, no 6, 1726-1735 p.Article in journal (Refereed) Published
Abstract [en]

Australian Cretaceous ichthyosaur material is amongst the most complete in the world. This study describes postcranial remains referred to the upper Albian species Platypterygius australis, including the first record of pelvic and hindlimb elements for this taxon. A combination of phylogenetically significant traits such as lack of fusion between the atlas-axis complex and third cervical centrum, the presence of three distal facets on both the humerus/femur for accommodation of the anterior zeugopodial elements plus the radius/tibia and ulna/fibula, concave preaxial accessory facet surfaces on both the humerus and the femur, and complete fusion of the ischiopubis with closure of the obturator foramen, are considered diagnostic for the species and (in conjunction with other previously identified cranial/postcranial features) may serve to distinguish P. australis from the other paleogeographically disparate Platypterygius spp.

Place, publisher, year, edition, pages
2010. Vol. 30, no 6, 1726-1735 p.
National Category
Earth and Related Environmental Sciences
URN: urn:nbn:se:uu:diva-135767DOI: 10.1080/02724634.2010.521930ISI: 000284888100006OAI: oai:DiVA.org:uu-135767DiVA: diva2:375526
Available from: 2010-12-08 Created: 2010-12-08 Last updated: 2013-01-15Bibliographically approved

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